Water is perhaps the most utilized reagent in a laboratory and is often critical for an experiment. As instruments have become more sensitive and applications increasingly complex, the demand for high-purity water has also increased. A few years ago, parts per million (ppm) was a very small level of contamination, but now people are looking for partsper- billion (ppb) or parts-per-trillion (ppt) levels of contamination.
There are eight commonly used methods to purify water: distillation, deionization, reverse osmosis, activated carbon filtration, microporous filtration, ultrafiltration, ultraviolet oxidation and electrodialysis. The National Committee for Clinical Laboratory Standards (NCLS) has specified three types of water: I, II and II, as well as special-purpose water, depending on their use.
As part of our online Lab Products Survey series, we present the results from our recent survey on purchasing a water purification system.
Number of water purification systems installed within labs:
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Required purity level of ASTM standards lab water:
Budget range for lab water purification system accessories:
Water purification system components also being used:
Purchasing plans for a new or used water purification system:
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Budget range for a water purification system purchase:
Factors/features in the decision-making process to buy a water purification system, rated by importance:
Respondents' fields of work:
If you would like to participate in our laboratory equipment purchasing surveys, please visit www.labmanager.com/surveys
Total completed surveys: 374